Computational complexity reduced MMSE adaptive array antenna with space-temporal joint equalization

A tapped-delay-line adaptive array antenna (TDL-AAA) is proposed for the method of space and temporal (frequency) equalization. However, this method has a drawback that requires many variable taps (AAA elements /spl times/ LE (linear equalizer) taps) and many multiplications. In this paper, in order to reduce the computational complexity, we propose the cascade connection of one adaptive array antenna and one linear equalizer with space and temporal joint equalization. The LE mitigates multipath waves close to the direct wave. The AAA removes only interference users waves. The effectiveness of the proposed method is confirmed by theoretical consideration and computer simulation.